package chapter02

object Demo02_Identifier {
  def main(args: Array[String]): Unit = {
    //以字母或者下划线开头，后接字母、数字、下划线
    val hello:String = ""

    //以操作符开头，并且只包含操作符
    val +-*/ = "hello"
    println(+-*/)

    //用反引号’‘
    val `if` = "if"
    println(`if`)
  }
}
